ARROW-type diode lasers show strong single-mode selectivity with stable beam operation to high powers (500 mW) due to the large built-in index profile. Triple-core ARROW lasers have potential for 1 W single-spatial mode operation. Preliminary results are 550 mW (diffraction- limited beam) from a 20 micron aperture triple-core ARROW laser fabricated using the InGaP based material system.
Luke J. Mawst, Luke J. Mawst,
"High-power single-mode antiresonant reflecting optical waveguide-type diode lasers", Proc. SPIE 2382, Laser Diodes and Applications, (28 April 1995); doi: 10.1117/12.208444; https://doi.org/10.1117/12.208444